Painter's Servant [Kaladesh Inventions]Set: Kaladesh Inventions Type: Artifact Creature Scarecrow Rarity: Mythic Cost: {2} As Painter's Servant enters the battlefield, choose a color. All cards that aren't on the battlefield, spells, and permanents are the chosen color in addition to their other colors. This whimsical automaton helps create beautiful murals, then stands guard as they dry.

quoting Confucius

cast it without paying its mana cost

Set: Unlimited Edition Type: Enchantment — Aura Rarity: Rare Cost: {W}{W} Enchant creature

Set: Portal Three Kingdoms Type: Creature — Human Mystic Rarity: Rare Cost: {2}{G} Taoist Mystic can't be blocked by creatures with horsemanship

Set: Unlimited Edition Type: Creature — Angel Rarity: Uncommon Cost: {3}{W}{W} Flying

Set: Legends Type: Creature — Wall Rarity: Rare Cost: {3}{R}{R} Defender (This creature can't attack

Schemes can't be set in motion that turn

Set: Odyssey Type: Enchantment Rarity: Uncommon Cost: {1}{U} When a player casts a spell

Set: Alpha Edition Type: Enchantment — Aura Rarity: Uncommon Cost: {2}{U} Enchant enchantment

I — Put a +1/+1 counter on up to one target creature

Set: Commander 2017 Type: Legendary Creature — Dragon Avatar Rarity: Rare Cost: {W}{U}{B}{R}{G} Flying

Set: Kaladesh Inventions Type: Artifact Rarity: Mythic Cost: {X} Sunburst (This enters the battlefield with a charge counter on it for each color of mana spent to cast it